Liquid dispenser



LIQUID DI S PENS ER Filed Aug. 10, 1933 Patented Apr. 3, 1934 LIQUIDDISPENSER Paul B. Brown, Toledo,.Ohio, assignor to The De VilbissCompany, tion of Ohio Application August 10,

7 Claims.

ing specification, and while in its broader aspect I it is capable ofembodiment in various forms, a preferred embodiment thereof isillustrated in the accompanying drawing, which is a fragmentary sideelevation of a device embodying the invention, with parts in centralvertical section,

20 taining the perfume, or other liquid to be dispensed, and which, inthe present instance, is provided with a neck 2, with a ferrule 3securely mounted thereon. A discharge head 4 is mounted on the ferruleand is provided vertically therethrough with a bore 5, the lower endportion of which is reduced and interiorly threaded, as shown at 6. Acoupling member 7 of nipple-form, with an axial opening therethrough, isextended up through a central opening in the ferrule top, and threadsinto the reduced portion 6 of the head 4, while the end thereof withinthe ferrule is enlarged to provide an annular shoulder, which engagesand holds a washer member 8 to the inside of the ferrule top inopposition to the head.

A plug 9 is fitted into the upper end of the bore 5, its loweringmovement therein being limited by the plug having shouldered engagementwith the top of the head, as shown at 10. The lower end of the plug isprovided with a reduced ex- 4 tension 11, which projects down through,or partially through, the opening through the nipple 7 in spacedrelation to its wall, so that communication is provided between thelower end portion of the cavity formed by the enlarged portion of thebore and the upper end portion of the receptacle 1.

The plug 9 is provided in its upper or outer end portion with an axiallydisposed cavity 12, and in its lower end portion with a cavity 13, inwhich latter is fitted, in the present instance, a tube 14 extendingdown into the receptacle 1 to near the bottom thereof. The adjacent endsof the cavities 12 and 13 are in communication through a restrictedpassage 15, and this passage is closed at its inner or receptacle end bya valve Toledo, Ohio, a corpora- 1933, Serial No. 684,599

16, in the present instance of the ball type, when pressure is presentin the receptacle. The valve 16 normally seats down on the upper end ofthe tube 14, but does not close the end of such tube,

due to the provision of notches therein, as indi- I cated and as wellLmderstood in the valve art.

A sampler member 17 is removably carried by the plug 9 and includes ahandle portion 18 with a plug portion 19 at its inner end for fittinginto and closing the outer end portion of the cavity 12. A stem 20 ofless diameter than the cavity 12 fixedly projects downwardly from theplug portion 19 of the sampler, and when said portion is seated in thecavity 12, the lower end of the stem projects through and slightlybeyond the lower end of the passage without closing the communicationthrough said passage between the cavities 12 and 13. When the stem is inthis position, with respect to the passage 16, its lower end serves as astop for the valve 16 to prevent it, under pressure within thereceptacle, from closing said passage. The stem carries a cup 21 withinthe cavity 12 for the purpose hereinafter described. When the plug 19 isseated in the cavity 12, the cup 21 is spaced from I the bottom and sidewalls of such cavity, so as not to interfere with the passage of liquidthrough the passage 15 and around the cup.

The lower end portion of the head bore 5 has communication at one sidethereof through a tube 22 with a source of air pressure supply, which,in

I the present instance, is shown as comprising a hand-pressure bulb 23of the type customarily used on atomizers. Air pressure introduced intothe bore 5 is supplied to the receptacle 1 above the liquid thereinthrough the nipple 7 between it and the reduced portion 11 of the plug9.

A liquid discharge tube 24 is topped into a side of the head 4andcommunicates with the cavity 12 preferably at or slightly above theupper edge of the cup 21 through a wall passage 25. A nozzle 26 iscarried by the tube 24 at its outer end. In the operation of the device,liquid is discharged from the nozzle 26 into a receiving receptacle,during a dispensing operation, by creating a sufficient air pressure inthe receptacle to force the liquid up into the cavity 12 through thetube 14 and thence to the discharge tube 24 and its nozzle. During thisoperation, the sampling member 17 is in position in the head, as shownin the drawing, with the lower end of its stem 20 projecting into thecavity 13 of the plug 9 a sufiicient distance to prevent a seating ofthe valve 16 against the lower edge wall of the restricted passage 15when the valve is raised by pressure within the receptacle. During anoperation of the device, a portion of the liquid, which enters thecavity 12, is received within the cup 21 and remains therein forsampling should the member 17 be removed from the head for such purpose.Any liquid contained Within the cup 21, while in the cavity 12, willremain therein unevaporated for a considerable period, inasmuch as thetop of the cavity 12 is closed to the atmosphere by the plug 19 and theonly open communication with the atmosphere is through the dischargetube 24 and its nozzle 26. It is apparent that should the cup 21 beempty, it may be supplied with'liquid from the receptacle by creating asufficient pressure within the receptacle to force the liquid up intothe cavity 21. When the sampler member is removed, the valve 16 closesunder pressure from within the receptacle to prevent such pressure frompassing liquid up into the cavity 12.

In order to relieve the air pressure from the interior of the receptaclewhen it is desired to stop a discharging of the liquid through the tube24, a vent hole 2'7, in the present instance, is provided in the airinlet tube 22, to be covered by the operator during the dispensingoperation, and released or uncovered at the end of such operation, aswell understood in the art.

I wish it understood that my invention is not limited to any specificarrangement or formof the parts, as it is capable of numerousmodifications and changes without departing from the spirit of theclaims.

Having thus described my invention, what I claim as new, and desire tosecure by United States Letters Patent, is:

1. In a liquid dispensing device, a liquid receptacle, means forming aliquid discharge passage from the bottom portion of the receptacle andan air pressure supply passage in communication with the upper portionof the receptacle, and means disposed in a portion of the liquid passageand adapted to be removed therefrom and to carry with it a portion ofthe liquid which has entered the liquid passage from the receptacle.

2. In a liquid dispensing device, a liquid receptacle, means carried bythe receptacle and forming a liquid discharge passage in communicationwith the lower portion of the receptacle and. an

air pressure supply passage in communication with the upper portion ofthe receptacle, said liquid passage having a cavity therein, and asampling device removably mounted in said cavity and adapted whenremoved therefrom to carry with it a portion of the liquid forced intothe cavity from the receptacle.

3. In a liquid dispensing device, a receptacle, means associated withthe receptacle and providing a liquid discharge passage in communicationat its inner end with the lower interior portion of the receptacle andan air pressure supply passage opening communication between a source ofair pressure supply and the upper portion of the receptacle, and asampler means removably mounted in a portion of said first means andhaving a cup portion disposed in said liquid discharge passage forreceiving for sampling purposes a portion of the liquid dischargingthrough said passage.

4. In a liquid dispensing device, a receptacle, means associated withthe receptacle and providing a liquid discharge passage in communicationat its inner end with the lower interior portion of the receptacle andan air pressure supply passage opening communication between a source ofair pressure supply and the upper portion of the receptacle, a samplermeans removably mounted in a portion of said first means and having acup portion disposed in said liquid discharge passage for receiving forsamplingpurposes a portion of the liquid discharging through saidpassage, and means operable to close said liquid discharge passage whensaid sampler means is removed from the cavity.

5. In a liquid dispensing device, a receptacle, means associatedwith-the receptacle and providing a liquid discharge passage incommunication at its inner end with the lower interior portion of thereceptacle and an air pressure supply passage opening communicationbetween a source of air pressure supply and the upper portion of thereceptacle, a sampler means removably mounted in a portion of saidfirst'means andhaving a cup portion disposed in said liquiddischarge-passage for receiving for sampling purposes a portion of theliquid discharging through saidpassage, and valve means automaticallyoperable within the liquid passage by pressure in the receptacle toclose said passage when the sampler means is removed therefrom.

6. In a liquid dispensing device, a receptacle, means associated withthe receptacle and provid ing a liquid discharge passage'incommunication at its inner end with the lower interior portion of thereceptacle and an air pressure supply passage opening communicationbetween a source of air pressure supply and the'upper portion of thereceptacle, a sampler means removably mounted in a portion of said firstmeans and having a cup portion disposed in-said liquid discharge passagefor receiving for sampling purposes a portion of the liquid dischargingthrough said passage, and

valve means automatically operable within the liquid passage by pressurein the receptacle to close said passage when the sampler meansis-removedtherefrom, said sampler means when mounted in said first means havingcoaction with the valve means to prevent a passage closing seating'ofthe latter.

.7. In a liquid dispensing device, a liquid receptacle, a head mountedthereon and having a bore therethrough in communication at one: end

with the upper interior portion of the receptacle, a plug mounted insaid boreand forming a cavity in its upperportion and having a tubularpart extending down into the bottom portion of the receptacle with avalve chamber therein and forming a liquid delivery passage inconnection withsaid cavity, a valve in said chamber normally standing inopen, position and operable to close said passage by pressure fromwithin the receptacle, means for supplying air under pressure to theupper portion of the receptacle, a liquid discharge tube extending fromsaid cavity, and sampler means adapted to be removably mounted in and toclose the upper portion of said-cavity and having provision foraccumulating a small portion of liquid from the cavity for samplingpurposes when such means is removed from the cavity, saidsamplermeanswhen mounted in the cavity being adapted to prevent a passage closingseating ofsaid valve.

PAUL B. BROWN.

